Which of the following best describes a light-year?

C) The distance light travels in one year

Why do we see objects like stars and galaxies as they were in the past?

A) Because their light takes time to reach us

Where are elements heavier than hydrogen and helium primarily formed?

A) In the cores of stars through nuclear fusion

What is the main reason Earth experiences seasons?

B) The tilt of Earth's axis relative to its orbit

What is the primary difference between a hypothesis and a theory in science?

A) Hypothesis is an educated guess, while a theory is a tested explanation

What is an astronomical unit (AU)?

C) The average distance between the Earth and the Sun

Which of the following is NOT a step in the scientific method?

C) Proving a theory beyond all doubt

Which of the following best describes our cosmic address in order of increasing scale?

C) Earth → Solar System → Milky Way → Local Group → Universe

The cosmological principle states:

The laws of physics are constant at every location within the universe.

Occam's Razor is the principle stating:

The explaination with the fewest assumptions is the best.

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Astronomy 1

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Questions 16

Answers

1
The local group, containing the Milky Way galaxy and the rest of the Virgo supercluster is part of the greater
Hercules supercluster
Sloan great wall
Laniakea supercluster
Perseus-Pisces supercluster
2
Our galaxy is part of the:
Bootes Supercluster
Coma Supercluster
Virgo Supercluster
Leo Supercluster
3
Our solar system is part of the:
Milky Way Galaxy
Sombrero Galaxy
Cartwheel Galaxy
Andromeda Galaxy
4
Which of the following best describes a light-year?
A) The time it takes for light to travel around the Earth
B) The time between successive full moons
C) The distance light travels in one year
D) The average distance between the Earth and the Sun
5
Why do we see objects like stars and galaxies as they were in the past?
D) Because our telescopes alter their images
B) Because they are moving away faster than light
C) Because the universe distorts their appearance
A) Because their light takes time to reach us
6
Where are elements heavier than hydrogen and helium primarily formed?
C) In the interstellar medium
D) Within black holes
B) During the initial moments of the Big Bang
A) In the cores of stars through nuclear fusion
7
What is the main reason Earth experiences seasons?
A) The changing distance between Earth and the Sun
D) The Moon's gravitational influence
B) The tilt of Earth's axis relative to its orbit
C) Variations in the Sun’s brightness
8
What is the primary difference between a hypothesis and a theory in science?
B) A hypothesis is proven true, while a theory is just a guess
D) A hypothesis is broader in scope than a theory
A) Hypothesis is an educated guess, while a theory is a tested explanation
C) A hypothesis is based on opinion, while a theory is based on belief
9
What is an astronomical unit (AU)?
B) The average distance between the Earth and the Moon
C) The average distance between the Earth and the Sun
D) The radius of the Milky Way galaxy
A) The distance light travels in one year
10
What is the approximate age of the universe?
C) 10 million years
D) 100 billion years
B) 13.8 billion years
A) 4.5 billion years
11
How many planets are in our solar system?
9
6
7
8
12
Which of the following is NOT a step in the scientific method?
D) Testing predictions through experiments
A) Making observations
B) Forming a hypothesis
C) Proving a theory beyond all doubt
13
Which of the following best describes our cosmic address in order of increasing scale?
A) Earth → Solar System → Milky Way → Universe → Local Group
D) Milky Way → Solar System → Earth → Universe → Local Group
C) Earth → Solar System → Milky Way → Local Group → Universe
B) Solar System → Milky Way → Earth → Local Group → Universe
14
The cosmological principle states:
Some physical laws change depending on the location but some are constant.
The laws of physics change depending on the location within the universe.
The laws of physics are constant at every location within the universe.
The laws of physics are false at every location in the universe.
15
Occam's Razor is the principle stating:
The explaination with the fewest assumptions is the best.
The sharpest tools lead to the best scientific results.
The most complex explanations are the best ones.
As long as you have an answer, the number of assumptions doesn't matter.
16
What is the primary composition of the universe immediately following the Big Bang?
D) Iron and nickel
B) Hydrogen and helium
A) Carbon and oxygen
C) Nitrogen and phosphorus

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